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dc.contributor.authorScheermeyer, Ellyen_US
dc.contributor.authorAgranovski, Igoren_US
dc.date.accessioned2017-05-03T13:48:20Z
dc.date.available2017-05-03T13:48:20Z
dc.date.issued2009en_US
dc.date.modified2010-06-24T05:22:20Z
dc.identifier.issn00218502en_US
dc.identifier.doi10.1016/j.jaerosci.2009.06.003en_AU
dc.identifier.urihttp://hdl.handle.net/10072/30657
dc.description.abstractFungi havesignificanthealtheffectsvaryingfromseriousallergicreactionsfrominhalationto toxic effectsandevenfatalinfections.Indoorandoutdoorsamplingmayidentifypotentially contaminated environments,butsamplingtechniquesneedrefiningtosetrisklevelsregarding occupational exposureortoassessandanalysesuddenoutbreaksoffungi.Aslittleisknown of thesporulationanddispersaldynamicsoffungi,wehaveexperimentedwithaerosolizing fungal sporesfromculturesgrowninstandard9cmPetridishesfor3-10husinganewdevice that incorporatesvibration.Weevaluatedtheeffectoftheairflowandfrequencyonaquan- tity andpatternofsporesaerosolized.Frequencyhadpositive,negativeornoeffect.Positive quantitative effectswerenotedin Aspergillus versicolor at 50Hz,in Aspergillus niger at 400Hz and at100-400Hzin Rhizopus. Aerosolizationof Aspergillus species droppedsignificantlyin the first20minandthenstabilisedfor2.5-3h.Afterthistimeperiod,thegenerationprocess became highlyunstablewithlargequantitiesofsmallparticlesproduced.Itcouldbeexplained by appearanceofcracksonthenutrientsurfaceduetodesiccationwithcorrespondingrelease of particlesofnutrienttotheaircarrier.For Rhizopus, theinitialsteepdecreaseinparticle generation forthefirst20minoftheprocesswasfollowedbyquitestablesporeproductionfor the following10hofprocessoperation.Therewerenocracksobservedonthenutrientsurface for theentire10hoperationofthedevice.Theairflowalsoaffectstheefficiencyofthespore release. Itwasfoundthatincreaseintheairflowwasassociatedwithmoreefficientsporulation from thenutrientdish.Ontheotherhand,thesizedistributioncurveoftheairbornespores produced athigherairflowswascorrespondinglyslightlyshiftedtowardslargersizes,which is relatedtolessefficientlooseningofsporesandcorrespondingincreaseinconcentrationof clumps consistingofmorethanonespore.Also,itwasfoundthatincubationoffungalcultures for extendedperiods(2-6weeks)ledtowardsproductionoflargernumbersofairbornefungal spores.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherElsevieren_US
dc.publisher.placeUnited Kingdomen_US
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom879en_US
dc.relation.ispartofpageto889en_US
dc.relation.ispartofissue10en_US
dc.relation.ispartofjournalJournal of Aerosol Scienceen_US
dc.relation.ispartofvolume40en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchChemical Engineering not elsewhere classifieden_US
dc.subject.fieldofresearchcode090499en_US
dc.titleDesign and evaluation of a new device for fungal spore aerosolization for laboratory applicationsen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Environmenten_US
gro.date.issued2009
gro.hasfulltextNo Full Text


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